Wave absorbing water tank for underwater pier vibration table test

Abstract

The utility model discloses a wave absorbing water tank for an underwater bridge pier vibration table test. The vibration table comprises a vibration table top, a bridge pier and vibration table connecting steel plate is fixedly connected to the center of the top of the vibration table top, a bridge pier model is fixedly connected to the top of the bridge pier and vibration table connecting steel plate, supports are fixedly connected to the two sides of the top of the bridge pier model, and balancing weights are fixedly connected to the tops of the supports. The top of the vibration table top is fixedly connected with a buffer wave absorbing layer. According to the utility model, the practical problem of boundary condition interference caused by small size of the vibration table surface and insufficient length of the water tank during a deepwater bridge vibration table test can be effectively solved, and the hollow soft buffer material is arranged between the bridge pier and the vibration table connecting steel plate, so that the interference of reflected waves to a test result during the vibration table test can be relieved and even eliminated; therefore, experimental data better conforming to actual conditions can be obtained, and the experimental data are ensured to be accurate and effective.

Description

Technical Field

[0001] The utility model relates to the technical field of underwater bridge pier vibration table test, in particular to a wave-absorbing water tank for underwater bridge pier vibration table test. Background Art

[0002] For deep-water bridges, when conducting underwater pier shaking table tests, the conventional practice is to install a steel water tank on the shaking table surface and inject a certain depth of water into the tank. When the shaking table is turned on, the pier and the water in the water tank work together to measure the dynamic water pressure, pier body stress, pier top displacement and other seismic responses of the pier under simulated earthquake vibration, so as to verify the seismic design of deep-water bridge piers. During the vibration process, the water in the steel water tank will reflect on the wall of the water tank. The superposition of the reflected wave and the incident wave may cause the wave to be eliminated or the amplitude of the water surface to be amplified, thus failing to truly reflect the actual seismic response of the deep-water bridge;

[0003] When conducting a shaking table test on a deep-water bridge, the shaking table test will have a different wave mechanism from that of an actual deep-water bridge due to the significant influence of the boundary conditions of the shaking table water tank, and cannot effectively reduce or even eliminate the interference of reflected waves on the test results;

[0004] Therefore, we provide a wave-absorbing water tank for underwater bridge pier shaking table test. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a wave-breaking water tank for underwater bridge pier vibration table tests. The wave-breaking water tank consists of a water tank and a first layer of buffer wave-breaking layer, a second layer of buffer wave-breaking layer, a third layer of buffer wave-breaking layer and stiffening bars. The arrangement of the water tank and the buffer wave-breaking layer on the vibration table surface can effectively solve the practical problem of boundary condition interference when the vibration table surface is small and the water tank length is insufficient during deep-water bridge vibration table tests. The hollow soft buffer material is installed on the steel plate connecting the pier and the vibration table, which can reduce or even eliminate the interference of reflected waves on the test results during the vibration table test, so as to obtain experimental data that is more in line with the actual situation, ensure that the test data is accurate and effective, and solve the problems raised in the above-mentioned background technology.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a technical solution adopted by a wave-breaking water tank for underwater bridge pier vibration table test is: it includes a vibration table top, a bridge pier and vibration table connecting steel plate is fixedly connected at the center of the top of the vibration table top, a bridge pier model is fixedly connected to the top of the bridge pier and vibration table connecting steel plate, both sides of the top of the bridge pier model are fixedly connected to supports, the top of the supports is fixedly connected to a counterweight block, the top of the vibration table top is fixedly connected to a buffer wave-breaking layer, the surface of the buffer wave-breaking layer is fixedly connected to a water tank, the inner cavity of the water tank is provided with water, and longitudinal ribs and transverse ribs are provided with reinforcing strips at a certain distance on the outer side of the groove wall around the bridge pier and vibration table connecting steel plate.

[0009] As a preferred solution, the water tank includes a first buffer wave-breaking layer, a second buffer wave-breaking layer and a third buffer wave-breaking layer.

[0010] As a preferred solution, the first buffer and wave-breaking layer and the second buffer and wave-breaking layer are soft composite materials, and the water tank is a steel plate with a thickness of 1-3 mm.

[0011] As a preferred solution, the inner cavities of the steel plate connecting the pier and the vibration table and the vibration table top are both provided with a plurality of threaded holes, and the vibration table top and the steel plate connecting the pier and the vibration table are fixedly connected by anchor bolts.

[0012] As a preferred solution, a plurality of small holes are provided on the surface of the first buffer and wave-breaking layer, the second buffer and wave-breaking layer is hollow, and the bottom of the second buffer and wave-breaking layer is serrated.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a wave-absorbing water tank for underwater bridge pier vibration table testing, which has the following beneficial effects.

[0015] The utility model effectively solves the practical problem of boundary condition interference when the vibration table test of deep-water bridge is carried out due to the small size of the vibration table table and insufficient length of the water tank by installing a water tank with three layers of buffer and wave-breaking layers and stiffening strips on the vibration table surface. The hollow soft buffer material is installed on the steel plate connecting the pier and the vibration table, which can reduce or even eliminate the interference of reflected waves on the test results during the vibration table test, so as to obtain experimental data that is more in line with the actual situation and ensure that the test data is accurate and effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a bottom view of the water tank of the utility model;

[0018] Figure 3This is a cross-sectional view of the utility model sink;

[0019] Figure 4 This is the right view of the buffer and wave-breaking layer of the utility model.

[0020] In the figure: 1. water tank; 2. buffer and wave-breaking layer; 3. vibration table surface; 4. steel plate connecting the pier and the vibration table; 5. anchor bolts; 6. water body; 7. pier model; 8. support; 9. counterweight; 10. first layer of buffer and wave-breaking layer; 11. second layer of buffer and wave-breaking layer; 12. third layer of buffer and wave-breaking layer; 13. stiffening strips. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0022] See also Figure 1-4 , the embodiments of the utility model will be further described below in conjunction with the accompanying drawings.

[0023] Example

[0024] The technical scheme adopted by a wave-breaking water tank for a vibration table test of a bridge pier in water is as follows: it comprises a vibration table surface 3, a bridge pier and vibration table connecting steel plate 4 is fixedly connected at the center of the top of the vibration table surface 3, a bridge pier model 7 is fixedly connected to the top of the bridge pier and vibration table connecting steel plate 4, supports 8 are fixedly connected to both sides of the top of the bridge pier model 7, a counterweight block 9 is fixedly connected to the top of the support 8, a buffer wave-breaking layer 2 is fixedly connected to the top of the vibration table surface 3, a water tank 1 is fixedly connected to the surface of the buffer wave-breaking layer 2, a water body 6 is arranged in the inner cavity of the water tank 1, and longitudinal ribs and transverse ribs are provided at a certain distance on the outer side of the groove wall around the bridge pier and vibration table connecting steel plate 4.

[0025] The water tank 1 includes a first buffer and wave-breaking layer 10, a second buffer and wave-breaking layer 11 and a third buffer and wave-breaking layer 12. The first buffer and wave-breaking layer 10 and the second buffer and wave-breaking layer 11 are soft composite materials. The water tank 1 is a steel plate with a thickness of 1-3 mm. The inner cavities of the steel plate 4 connecting the pier and the vibration table and the vibration table top 3 are both provided with a plurality of threaded holes, and the vibration table top 3 and the steel plate 4 connecting the pier and the vibration table are fixedly connected by anchor bolts 5. The surface of the first buffer and wave-breaking layer 10 is provided with a plurality of small holes, the second buffer and wave-breaking layer 11 is hollow, and the bottom of the second buffer and wave-breaking layer 11 is serrated.

[0026] The working principle of the utility model is: effective buffering and energy absorption is carried out through 10, and the first buffering and wave-breaking layer 10 is used to prevent water wave reflection, and the second buffering and wave-breaking layer 11 plays the role of wave absorption and energy absorption again. The wave absorption and energy absorption capacity is large, the production and processing are simple, the cost is low, and the weight is light. Through the arrangement of the water tank 1, the buffering and wave-breaking layer 2, the vibration table surface 3, the steel plate 4 connecting the pier and the vibration table, the anchor bolts 5, the water body 6, the pier model 7, the support 8, the counterweight block 9, the first buffering and wave-breaking layer 10, the second buffering and wave-breaking layer 11, the third buffering and wave-breaking layer 12 and the stiffening bar 13, the practical problem of boundary condition interference when the vibration table test of the deep-water bridge is carried out due to the small size of the vibration table surface 3 and the insufficient length of the water tank 1 is effectively solved. The hollow soft buffer material is installed on the steel plate 4 connecting the pier and the vibration table, which can slow down or even eliminate the interference of the reflected wave on the test result during the vibration table test, so as to obtain experimental data that is more in line with the actual situation and ensure that the test data is accurate and effective.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A wave-absorbing water tank for underwater bridge pier vibration table test, comprising a vibration table surface (3), characterized in that: A bridge pier and vibration table connecting steel plate (4) is fixedly connected at the center of the top of the vibration table surface (3); a bridge pier model (7) is fixedly connected to the top of the bridge pier and vibration table connecting steel plate (4); supports (8) are fixedly connected to both sides of the top of the bridge pier model (7); a counterweight (9) is fixedly connected to the top of the support (8); a buffer wave-breaking layer (2) is fixedly connected to the top of the vibration table surface (3); a water tank (1) is fixedly connected to the surface of the buffer wave-breaking layer (2); a water body (6) is arranged in the inner cavity of the water tank (1); and longitudinal ribs and transverse ribs are provided with reinforcing strips (13) at a certain distance on the outer side of the groove wall around the bridge pier and vibration table connecting steel plate (4).

2. The wave-absorbing water tank for underwater bridge pier vibration table test according to claim 1, characterized in that: The water tank (1) comprises a first buffering and wave-breaking layer (10), a second buffering and wave-breaking layer (11) and a third buffering and wave-breaking layer (12).

3. The wave-absorbing water tank for underwater bridge pier vibration table test according to claim 2, characterized in that: The first buffer wave-breaking layer (10) and the second buffer wave-breaking layer (11) are soft composite materials, and the water tank (1) is a steel plate with a thickness of 1-3 mm.

4. The wave-absorbing water tank for underwater bridge pier vibration table test according to claim 1, characterized in that: The inner cavities of the bridge pier and vibration table connection steel plate (4) and the vibration table top (3) are both provided with a plurality of threaded holes, and the vibration table top (3) and the bridge pier and vibration table connection steel plate (4) are fixedly connected by anchor bolts (5).

5. The wave-absorbing water tank for underwater bridge pier vibration table test according to claim 2, characterized in that: The surface of the first buffer wave-breaking layer (10) is provided with a plurality of small holes, the second buffer wave-breaking layer (11) is hollowed out, and the bottom of the second buffer wave-breaking layer (11) is serrated.

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